แพทย์กระโทก วรรณนิสา. “The Academic Administration Affecting Early Childhood Development of Schools in Local Education Group 1 under the Department of Local Administration”. Mahamakut Graduate School Journal 16, no. 2 (July 3, 2019): 303–315. Accessed April 29, 2024. https://so04.tci-thaijo.org/index.php/mgsj/article/view/200628.